main()
{
    int a, b, c;
    for (a=0; a<=1; a++)
      for (b=0; b<=1; b++)
        for (c=0; c<=1; c++)
          if( (a&&!b || !a&&b)
              && ( b&&!c || !b&&c)
              && ( c&&a+b==0 || !c&&a+b!=0) )
              {
                printf("Zhangasan told a %s.\n", a ?"truth" : "life");
                printf("Lisi told a %s.\n", b ? "truth" : "life");
                printf("Wangwu told a %s.\n", c ? "truth" : "life");
              }
}